A Norwegian study found that merely cutting back on the number of cigarettes smoked per day did not lower a heavy smoker’s risk of early health problems. The study is published in the journal Tobacco Control.
The long-term Norwegian study, of more than 51,000 men and women aged between 20 and 34, found stubbing out was the only way to cut the risk.
Scientists found no evidence that heavy smokers who halve their daily cigarette intake cut their premature death risk.